Core-level Spectroscopy using Coincidence of Synchrotron Radiation and Laser

利用同步辐射和激光同时进行的核心级光谱学

• 批准号: 10304025
• 负责人: KAMADA Masao
• 金额: $ 22.14万
• 依托单位: Okazaki National Institutes
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10304025/
• 关键词: Synchrotron Radiation; Pulsed Photon; Laser Coincidence; Core-level Spectroscopy; Two-photon Spectroscopy; Core Exeiton; Photo-induced Phenomena; Time-resolved Photoelectron; レーザー; 同期実験; ポンプ プローブ; BaF2; CaF2; GaAs; レーザー同期; 真空紫外光; レーザー誘起

The coincidence of synchrotron radiation and laser is a powerful method to investigate solids and surfaces. There are three types of combinations : two-photon excitation of SR and laser, SR pump and laser probe. and Laser pump and SR probe. In this project. we have developed these three types of combinational uses of SR and laser. For examples. we have observed the luminescence from a wide-band gap material BaF2 excited by two photons (SR and laser), since BaF2 is one of interesting materials showing the Auger-free luminescence.Besides this, the two-photon reflection technique was also developed and the sharp structures were observd in the spectra of GaAs and ZnSe. A core-level photoelectron spectroscopy was developed to investigate the laser-induced phenomena on semiconductor and metal-organic complexes. The GaAs system showed a surface photovoltage effect and its temporal structure. The spin-cross over complex showed the remarkable change in the photoelectron spectra by laser irradiation.

同步辐射与激光的符合是研究固体和表面的一种强有力的方法。有三种类型的组合：SR和激光的双光子激发，SR泵浦和激光探测。以及激光泵浦和SR探针。在这个项目中。我们已经开发了SR和激光的这三种类型的组合使用。举个例子。由于BaF_2是一种具有无俄歇发光的材料，我们利用双光子（SR和激光）激发，观察到了宽禁带材料BaF_2的发光.此外，我们还发展了双光子反射技术，在GaAs和ZnSe的光谱中观察到了尖锐结构.发展了一种芯能级光电子能谱，用于研究半导体和金属有机配合物的激光诱导现象。GaAs系统表现出表面光电压效应及其时间结构。自旋交叉复合物在激光照射下的光电子能谱发生了显著的变化。

项目成果

S.Asaka et al.: "Ultraviolet light amplification within a nanometer-sized layer"Phys.Rev.B. 63. 81104-81107 (2001)

S.Asaka 等人：“纳米层内的紫外光放大”Phys.Rev.B。

M.Kamada,et al.: "Combined systems of SR and Laser for solid-state researches" J.Synchrotron Radiation. 5巻. 1035-1037 (1998)

M. Kamada 等人：“用于固态研究的 SR 和激光组合系统”J. Synchrotron Radiation，第 5 卷，1035-1037 (1998)。

S.More 他: "Coadsorption of Cs and O on GaAs : Formation of negative electron affinity surfaces at different temperatures"Surface Science. 454-456. 161-165 (2000)

S.More 等人：“GaAs 上的 Cs 和 O 的共吸附：不同温度下负电子亲和力表面的形成”Surface Science 454-456 (2000)。

S.Asaka 他: "Ultraviolet light amplification within a nanometer-sized layer"Phys.Rev.B. 63. 81104-81107 (2001)

S. Asaka 等人：“纳米层内的紫外光放大”Phys.Rev.B. 63. 81104-81107 (2001)

M.Kamada et al.: "Nano-Second Desorption of Alkali Fluorides Excited by Synchrotron Radiation Pulses"J.Electron spectroscopy and Related Phenom.. 101/103. 599-602 (1999)

M.Kamada 等人：“同步辐射脉冲激发的碱金属氟化物的纳秒解吸”J.电子光谱和相关现象..101/103。